Concrete building-block



J. R. McEWEN.

CONCRETE BUILDING BLOCK.

APPLICATION nuzo MAR. 30. I920.

1,401,624. Patented Dec. 27, 1921.

v =//o mmes 12. m awa TO 2 a 7 BY 313ml- /s. N I /6, ATTORNEY.

. 5-5 of Fig. 2.

-hii-T arr-ferment JAMES R. M'cEWEN, or eoosn cnnnnrnxas.

CONCRETE BUILDING-BLOCK.

1,4.QL624L.

Specification of Letters latent. Patented 27, 1921.

Application fi led March 30, i920.- Serial No. 369,924

and use the same.

, My invention reates to an improvement in concrete building blocks and means for constructing the same. It hasparticular reference to the forming of concrete or cement slabs which maybe used in the building of the smaller class of structure, such as resiclences, garages, barns, etc. An object of my invention is to provide a form of concrete building block, which may be easily assembled in the building operation and which may besecurely bound to the adj acent blocksto forma durable structure. 7 Another object is. to so form the block that it will be strong and, at the sametime, as light in weight as practicable.

A. further object is to provide. a means of constructing and shaping the block -which will be simple, accurate and rapid in operation.

' Referring to the drawing forming a part of this specification, and wherein like. nu.- meral of reference are applied to like parts throughout the several views, Figure 1 is a side elevation of my improved building block; Fig. 2 is a side elevation showing a detail intheconstruction of the building with my improved block; Fig. 3 is a transverse se"tion on the line 3-3 of Fig. 1; Fig. 4 is a broken front elevation of a building in which my improved. block is employed; Fig. 5 is a transverse. section on the line In the building of small structures, and especially the smaller class of houses, it has been found economical tov use blocks of concrete or cement formed in such manner as to be easily assembled in the construction thereof, and in the drawing I have illustrated a preferred form of building block which is especially adapted for that pur pose. The said block. is oblong on its outer face, having a flat surface similar to the usual board construction used in buildings. It is reinforced, however, on its inner face by a longitudinalridge to secure the proper strength of the material. This'form of block is shown in Figs. 1 to 5.

In Fig. 1 theblock is shown having a smooth outer face 1 andan inwardly projecting flange 2 at each jlateral edge thereof. This flange is for the purpose of thickening the edge of the block to form a substantial contacting. surface for union by means of cement'and otherwise with the adjacent block. Centrally of theblock is a longitudinal ridge 3, which forms a from the side,

strengthening means for the slab and also provides at its'fiat crest 4 a means forjsecuring the innerwall of the building where such wall or surface is required. 4 To accommodate the nailing of the laths, or other means, to the inner faced, wooden blocks 5 are embedded therein These blocks, as shown inFig. 1, are wider at their inner sides soas to form a mortised connection with the cement after the samehas been poured around them. These nailing blocks '5 may be spaced at such intervals, vertically of the cement block, as to provide the nailing surface required.

At the lower end of the block, ahead (fi i formed, thishead' being'solid for the full" width of the block and extending in thickness flush with the face l of the reinforcing r. I

ridge. The inner facej'of this head slopes inwardly, as shown at8, at each side of the central ridge to the thinner portionv of'the block. The upper end is also'forme-dinto a head 7 similar in construction to the head 6 at the lower end, except that the same is somewhat heavier. It is, longer than the lower end and slopes more gradually toward the outer side, as shown by the beveled face 8. At the upper end of the, head 7 the surface thereof is recessed to form alchannel 9 extending across the block parallel with the outer facel. The purpose of this channel will later appear. i

In the forming of the b ock small'semicylindrical channels or grooves 10 are formed in the outer edge. of the block, as

shown in Fig. 1, these channels forming, when registered with another adjacentblock,

a cylindrical bore through which'a .bolt or I other. attaching means 'may be placed. In Fig. 3 two adjacent-blocks are shown as attached together attheir adjacentedgesby such a means. v of such attachingbolts the outer-face is recessed slightly at the upper marginatll so To accommodate the heads as to provide a longitudinally entending recess or groove, as shown most clearly in id 1g. l. In attaching the two bloclrs together by this means, a washer 12 is placed around the opening 10 between two adjacent blocks, and a similar washer of larger extent 13 is placed on the inner face. rted A bolt 14 is then ins-e a d the blocks are clamped securely together by means of a nut 15 on the inner endor the said bolt. The use of this attaching means enables the blocks to be crawn securely together in surface alinement and to prevent any tendency of the blocks to move out of adjustment. the lower end of the block, and on the sides "thereof, are also formed semi-cylindrical grooves 16 ending; at their inner ends in a recess 1'? to receive the head of a bolt. A similar groove 18 is formed at she upper end, this groove 6X- tending along 'the face of the thickened head? of the block and ending at its upper end in the margin of the channel 9. Thus when the blocks are placed on end, as shown in Fig. 2, a bolt 24- may be inserted between two adjacent blocks extending upwardly through the channels 16 and 18 and secured in place by means of a nut on said bolt, thus holding the two blocks in vertical alinement. When the flooring of the second story, in a building erected by means. of these blocks, is laid, it is contemplated that the beams 19 to support saidv flooring shall rest upon the upper face 8 of the head 6 at the lower end of the block, as shown in Fig. 2, a wedge shaped block 20 is placed upon the inclined face of the head 6, thus leaving a horizontal upper face upon which the block 19 rests. The beams 19 are secured in position by means of a heavy strap of iron 21 which is bolted along the sidefaoe of the beam and extended through a flattened ggroove 22 formed in the edges f the blocks and bent laterally at the outer end, as shown at 23 in 5., thus anchoring the beams fi mly to the concrete blocks. a

i in the use of blocks formed in the manner described, the lower end 6 of the blocks are placed upon the foundation provided therefor, and will stand erect, the outer face 1 being set toward the outer side of the building. The blocks should preferably be long enough to extend the full height of the first story of the building. When a number of these blocks are set up adjacent each other to form a wall of the building, the grooves 10 in the adj acentfaces of he blocks will be adapted to :reglster so as to allow the inser- .tion of the bolts 14 therethrough and enable the adjacent blocks t be clamped firmly together to form the outer wall of. the building. At the upper end of the wall thus laid, the'channels 9 will register to form a single. channel extending along; the entire length ofthe building. It is then contem plated that reinforcing rods or beams may upwardly to receive the of the blocks used in the second the building. When the second has been erected in a similar manner i oer of the second story may be laid as ously indicated, iron straps 21 being insed through grooves 22 and bolted to the no shown in Figs. 2 and 5.

system of construction is used oparent that abuilding may be very no 1 erectec. and the blocks constituting the wall of the structure may be tied firmly together, bots against lateral and vertical .ovement, and durable structure thus obained. When the wall has been erected it is contemp ated that the outer face may be covered with a coating of stucco or similar and that metal laths or other means may be secured to the inner face to form the inert walls of the rooms within the building.

Having thus described my invention, what I claim new and desire to protect b'y Letters Patent is: v

1. A concrete building block comprising longitudinal member having a thick cencore on the inner side, aflat outer face, inwardly extending flanges at the sides thereof, said flanges having marginal recesses on the outer edges thereof, and marginal grooves along the said edges, said block having a transverse channel at one end and means at both ends to secure said block to an adjacent block above and below izh sane.

cement building block comprising a ac lnal slab of material having a thick .al core, inwardly extending flanges at oeth sides thereof, and having a transverse hannel at the upper end thereof, and means ice and ends to secure adjacent W other. concrete building block comprising longitudinal member having a flat outer face, thick central core on the inner face, inwardly A re ectingflanges at each slde, a

vertically adjacent blocks to secure said blocks together.

A concrete building block adapted to be stood on end in use and having transverse marginal grooves at its side edges to accommodate attaching means, and longitudinal grooves at each end for a similar purpose, and having a transverse channel at the upper end to receive a reinforcing and connecting rod in the manner described.

6. A concrete building block comprising a slab of concrete adapted to be stood on end in use, a central longitudinal core thereon, inwardly projecting heads on each end thereof, means on said heads to secure laterally adjacent blocks together and separate means to secure vertically adjacent blocks together, the lower heads having a supportin angles to said blocks. a

7. A concrete building block comprising a longitudinal slab of concrete adapted to he stood on end in use, a thick central core, a head at each end, said heads having longitudinalgrooves in the side faces thereof to accommodate attaching bolts, to secure the same'to similar blocks aboveor below the same, and transverse grooves on the end faces to receive lateral connecting means, and means at the edges of said slabs to secure laterally adjacent slabs together in the manner described.

In testimony whereof I hereunto aihx my signature this the 27th day of March, A. D.

1920.; 7 JAMES R. MOEWEN.

face to receive joists extending at right 

